EP2729626B1 - Verfahren zur herstellung einer gründung unter verwendung einer lastverteilermatte - Google Patents

Verfahren zur herstellung einer gründung unter verwendung einer lastverteilermatte Download PDF

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Publication number
EP2729626B1
EP2729626B1 EP12744040.2A EP12744040A EP2729626B1 EP 2729626 B1 EP2729626 B1 EP 2729626B1 EP 12744040 A EP12744040 A EP 12744040A EP 2729626 B1 EP2729626 B1 EP 2729626B1
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EP
European Patent Office
Prior art keywords
reinforcement
mat
building
mattress
pavement
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Application number
EP12744040.2A
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English (en)
French (fr)
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EP2729626A2 (de
Inventor
Helder GASPAR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hsols Industriels
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Hsols Industriels
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Publication of EP2729626A2 publication Critical patent/EP2729626A2/de
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Publication of EP2729626B1 publication Critical patent/EP2729626B1/de
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/02—Flat foundations without substantial excavation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/202—Securing of slopes or inclines with flexible securing means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/34—Foundations for sinking or earthquake territories

Definitions

  • the present invention is in the field of construction and building, more particularly in the realization of distribution mattresses.
  • the present invention will find a preferential application, but in no way limiting, in the production of a distribution mat intended to serve as a base and to receive as a top layer a structure, in particular a floor-type construction, in particular a non-structural structure.
  • the land is prepared in order to ensure the good performance of this construction.
  • the soil undergoes modifications to, firstly, to receive said construction and, secondly, to remain stable for the entire life of this construction.
  • a distribution mat is produced.
  • a mattress consists of a single layer of compacted material acting as a rigid support and fixed in time, absorbing some of the changes in the soil. It also makes it possible to level the floor surface as well, with a view to producing a construction on the upper face. It will be noted that between the surface of said mattress and the underside of the construction, a sliding layer is generally arranged, which can be made of sand with a tight intermediate layer in the form of a plastic film.
  • Soil improvement techniques involve modifying the characteristics of a soil by physical action (for example, vibrations) or by embedding a more resistant material in the soil or on the ground.
  • a technique used is to make additional foundations in the ground and on which will rest the superimposed mattress and construction.
  • ballasted columns can be made vertically in the soil, regularly spaced so as to form an anchor network intended to increase the bearing capacity of the soil and / or the shear strength, to reduce the absolute and differential settlements. as well as the time of consolidation, while avoiding the creation of draining elements.
  • ballasted columns reduce the risks caused by liquefaction phenomena during earthquakes or significant vibrations.
  • the ballasted columns are made of granular materials, without cohesion, set up by repression in the soil and compacted by successive passes. Such a column therefore has no binder on its height.
  • Another known solution consists of vertical piles, made of bonded material, such as reinforced concrete.
  • a major drawback related to this type of foundation lies in the need to bury the ground, by drilling, to then make the columns or piles.
  • the industrial pavements impose strong vertical stresses likely to deform locally or cross the distribution mat to directly act on the ground that may be packed.
  • the ground in reverse reaction, creates vertical stresses upwards likely to cross the mattress and deteriorate the upper construction.
  • the distribution mattress must reduce the forces and forces from the construction and the soil, by diffusing them within its thickness.
  • the present invention aims to overcome the drawbacks of the state of the art, by proposing the realization of a distribution mat having increased characteristics of recovery efforts, for both upward and downward forces, while having a thickness less, saving material costs and decreasing production time.
  • such a distribution mat increases the spacing of columns or piles, while maintaining the bearing capacity of the soil.
  • the invention provides to introduce a frame directly within said mattress, while maintaining its homogeneity.
  • said reinforcement makes it possible to take up stronger vertical stresses, whether they are ascending from the ground or descending since construction.
  • Such a method is characterized in that it consists, during the production of said mattress, to introduce a mesh reinforcement during compaction of said material.
  • the method consists in arranging said reinforcement within said mattress, after compacting a first layer of said material and before covering and compacting a second layer of the material.
  • said armature consists of at least one mesh of metal mesh, composite or plastic.
  • the method consists, prior to the realization of said mattress, to achieve soil improvements within and under said zone.
  • the invention makes it possible to produce a distribution mat having increased force-recovery characteristics, for both upward and downward forces, while having a smaller thickness, saving material costs and decreasing the production time.
  • the method consists in constructing said structure by casting a tessellation based on concrete and metal fibers, including or not a metal reinforcement.
  • the method may consist in providing in the upper part of said pavement means capable of controlling the shrinkage of the concrete during its drying and hardening, said means being at least partly in the form of said reinforcement.
  • such a method may consist in arranging in the upper quarter of the thickness of said tiling a metal reinforcement of large cross-section, in particular of a section of at least 2.57 cm 2 .
  • said armature may be positioned at the top of said pavement through raising means, especially distanciés.
  • said method consists in coating said armature with at least 25 mm.
  • the present invention relates to the construction of a structure and is particularly aimed at producing a distribution mattress 1.
  • Such a construction requires the grounding preparation of an area of a floor 2, in order to implant said structure.
  • Such earth moving may consist essentially of leveling the soil, by digging or backfilling, on an area depending on the size of said area and at a depth depending on the leveling of the soil.
  • said soil improvements 2 consist of columns or piles made within the soil to a given depth. Such improvements are spaced regularly according to the size of said area, as well as the loads and stresses generated by said structure and during its use.
  • said structure may be a building or another embodiment, such as a pavement or pavement.
  • the figure 1 shows an exemplary embodiment, wherein said structure consists of a pavement 4, structural or not.
  • a pavement 4 is non-structural, in particular intended for the production of an industrial type floor with high loads.
  • the invention makes it possible to realize a non-structural pavement 4 with a large surface between joints as a function of the configuration of the building or of the construction intended to receive said pavement 4.
  • Such a structure is then constructed by casting said concrete-based slab 4, in particular a metal fiber concrete matrix, including or not a metal reinforcement 5. Still in the example of this embodiment, visible on the Figures 3 to 7 , said tiling 4 incorporates a frame 5.
  • a support 100 of paving is carried out above said distribution mat or constituted at least in part by said mattress.
  • This support 100 is prepared through a step of adjusting the platform allowing variations of plus or minus one centimeter.
  • a closure layer is then made to fill the voids of the underlying parts by adding fine sized materials.
  • a sliding layer may be formed from a bed of sand of about two centimeters.
  • an interface which may be in the form of a film 101, in particular a polyethylene film.
  • This film 101 is planned end, a minimum thickness of the order of 150 microns.
  • the method according to the invention makes it possible to have in the upper part of said pavement 4 means 102 capable of controlling the shrinkage of the concrete during its drying and hardening.
  • These means 102 are in the form of a metal frame made from a welded mesh.
  • This frame 5 is provided with a large section, which section may be a minimum of 2.57 cm 2 .
  • the metal armature is disposed in the upper part of said pavement 4, in particular in the upper quarter of the paving 4.
  • This armature 5 is positioned at the top through the interposition raising 103, such wedges or distanciés. These distancies support at the top of said armature 5 and rest on the support 100 of the pavement 4 at the bottom.
  • the method consists in delimiting said tiling 4 in several zones.
  • the constraints require dividing the pavement 4 into several zones, in particular so that it retains its mechanical characteristics, its resistance, etc.
  • an area may be delimited either by other contiguous areas or by the edges of the building or construction intended to receive said pavement 4, in particular the walls of this construction.
  • each profile 105 comprises anchoring means 106 in the concrete, in particular in each zone.
  • These anchoring means 106 may consist of an element 107 extending parallel to said profile 105 and connected thereto by a connecting member 108, such as a rod or the like. These anchoring means 106 are fixed to said profile at regular intervals.
  • the method according to the invention consists in arranging, at the level of the connection of two zones, preferably under the profiles 105, stabilization means 109 shaped so as to allow the lateral displacement of one zone relative to another while by counteracting a possible effect of strumming or vertical displacement between two zones.
  • these stabilizing means 109 is in the form of a sleeve 110 extending horizontally in the matrix of a zone and having a substantially polygonal shape, in particular of trapezoidal shape.
  • a blade 111 integral with the adjacent zone, extending on either side of the junction boundary of two zones.
  • the transfer means 104 thus prevent strumming while protecting the edges of the zones constituting said tiling 4.
  • the method according to the invention provides means 112 for reinforcing the pavement 4 in order to avoid crack formation, in particular crack initiation at a projecting structural part, such as a re-entrant angle 113.
  • the reinforcing means 112 consist of at least one metal bar 114 disposed on said armature 5 and orthogonal to the median of said angle 113 considered.
  • these reinforcing means 112 preferably comprise three bars 114 extending parallel to one another.
  • each bar 114 is oriented substantially obliquely with respect to the lattice forming said armature 5.
  • reinforcing means 112 may be added for each incoming angle 113. It will be noted that an insulating material 116 may be disposed between the pillar 115 and the pavement 4.
  • the reinforcing means 112 of two consecutive angles may be bonded together at one of their ends, thus stiffening the set of reinforcement means 112.
  • each bar 114 of the reinforcing means 112 rests on the lattice of said armature 5 and can be secured thereto, in particular through ligatures, not shown.
  • said armature 5 is then coated with at least 25 millimeters. In the case of reinforcement means 112, the latter are also coated.
  • the high position of the armature 5 combined with its strong section makes it possible to control and recover the residual stresses on the surface and to prevent the formation of cracks.
  • the present invention also relates to a slab 4 of non-structural concrete from the above process.
  • This pavement 4 is composed of a matrix of concrete and metal fibers as well as a frame 5 with a large section in the upper part of said pavement 4.
  • the latter also includes all the aforementioned means.
  • such a pavement 4 can be made to a minimum thickness of fifteen centimeters.
  • said reinforcement 5 situated in the upper part makes it possible, on the one hand, to control the shrinkage of the concrete during its drying and hardening and, on the other hand, to resume the stresses and forces generated during the use of such a pavement 4.
  • the construction method according to the invention consists in producing a distribution mattress 1 by adding a compacted material within said zone.
  • a mesh reinforcement 10 is introduced during the compaction of said material.
  • a preferred embodiment consists in arranging said armature 10 within said mattress 1, after compacting a first layer 11 of said material and before covering and compacting a second layer 12 of the material.
  • the mesh armature 10 does not dissociate the integrity of the mattress 1, which forms a single layer incorporating said armature 10.
  • said mesh armature 10 is made indissociable , forming only a single element with the layers 11 and 12, without constituting a separation between them.
  • the distribution mattress 1 retains its mechanical characteristics and is reinforced by the frame.
  • said mesh reinforcement 10 consists of at least one metal mesh, composite or plastic.
  • a trellis can similar to a plastic or metallic mesh, or even a plastic sheathed metal.
  • such a lattice has a density determined according to the material constituting the mattress 1, allowing said material to pass through it at its meshes 100.
  • the dimensioning of said meshes 100 ensures the connection between the lower 11 and upper 12 layers. , depending on the material used for the mattress.
  • Said lattice is in the form of a wire mesh 100 woven hexagonal and is formed by the intermingling of metal cables 101, including iron.
  • metal cables 101 including iron.
  • two adjacent cables 101 are twisted in pairs along a length of one side 102 of a hexagonal mesh 100, then each cable 101 is twisted with the two cables 101 located on either side, to form the sides 102 respective other meshes 100 hexagonal, and so on, as visible on the figure 2 .
  • said cables 101 may be coated with a peripheral sheath improving their resistance, in particular against corrosion.
  • a sheath may be made of a plastic or composite material, especially a mixture of aluminum and zinc, particularly having characteristics of strength and impermeability to fluids and air.
  • each cable 101 may have a section of between 2 and 3 millimeters, in particular 2.20 or 2.45 mm.
  • the dimensions of each mesh 100 may have a length of 118 mm for a width of 80 mm.
  • Such dimensioning allows the mesh to fit on the particles of a mattress material 1 constituted by pebbles or rubble, without these particles being able to traverse said lattice. The latter is then perfectly nested inside the mattress 1.
  • said mesh reinforcement 10 may consist of several superimposed meshes separated by a compacted intermediate layer of material of the distribution mattress 1.
  • said mesh reinforcement 10 may be reinforced by suitable means, such as longitudinal blades or a metal grid made of an intersection of said blades, serving as support for said lattice and melted in one of the layers 11 or 12.
  • the mesh reinforcement 10 takes up the vertical forces, namely the ascending and descending forces and stresses, to absorb them longitudinally along its lattice, within the distribution pad 1.
  • a sliding layer 6 may be produced between the upper face of said mattress 1 and the lower face of said structure.
  • the latter may be formed from a bed of sand of about two centimeters.
  • an interface (not shown).
  • the latter may be in the form of a film, in particular a polyethylene film. This film is provided end, a minimum thickness of the order of 150 microns.
  • the present invention thus makes it possible to improve the recovery of upward and downward vertical forces and stresses, and to ensure their distribution within the mattress 1, without projection towards the ground 2 or the structure located above.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Road Paving Structures (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Claims (9)

  1. Verfahren zur Herstellung einer Gründung, bei dem:
    - durch Erdbewegung ein Bereich des Bodens (2) zur Aufnahme der besagten Gründung vorbereitet wird;
    - eine Lastverteilungsmatte (1) durch Zugabe eines verdichteten Materials im genannten Bereich hergestellt wird; und
    - die besagte Gründung auf der oberen Fläche der besagten Lastverteilungsmatte (1) hergestellt wird;
    dadurch gekennzeichnet, dass es darin besteht, während der Herstellung der besagten Matte (1) eine Maschenbewherung (10) während der Verdichtung des besagten Materials einzufügen.
  2. Verfahren zur Herstellung nach Anspruch 1, dadurch gekennzeichnet, dass es darin besteht, die besagte Bewherung (10) nach dem Verdichten einer ersten Schicht des besagten Materials und vor dem Bedecken und Verdichten einer zweiten Schicht des Materials innerhalb der besagten Matte (1) anzuordnen.
  3. Verfahren zur Herstellung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die besagte Bewehrung (10) aus mindestens einem Maschengitter aus Metall, Verbundmaterial oder Kunststoff besteht.
  4. Verfahren zur Herstellung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es darin besteht, vor dem Herstellen der besagten Matte (1), Verbesserungen (3) des Bodens innerhalb und unterhalb des besagtem Bereichs durchzuführen.
  5. Verfahren zur Herstellung nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es darin besteht, die besagte Bewehrung durch Gießen einer Bodenplatte (4) aus Beton und Metallfasern, die eine Metallbewehrung einschliesst oder nicht, herzustellen.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass es darin besteht, im oberen Teil der besagten Matte (4) Mittel anzuordnen, die geeignet sind, um das Schrumpfen des Betons während seiner Trocknung und seiner Härtung zu steuern, wobei die besagten Mittel mindestens teilweise als die besagte Bewehrung (5) ausgestaltet sind.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass es darin besteht, im oberen Viertel der Dicke der besagten Bodenplatte (4) eine metallische Bewehrung (5) mit großem Querschnitt, insbesondere einem Querschnitt von mindestens 2,57 cm2, anzuordnen.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die besagte Bewehrung (5) über Erhöhungsmittel 103, nämlich Abstandshalter, in dem oberen Teil der Bodenplatte (4) positioniert ist.
  9. Verfahren nach irgendeinem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass es darin besteht, die besagte Bewehrung (5) in mindestens 25 mm einzubetten.
EP12744040.2A 2011-07-04 2012-07-02 Verfahren zur herstellung einer gründung unter verwendung einer lastverteilermatte Active EP2729626B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1156027A FR2977597B1 (fr) 2011-07-04 2011-07-04 Procede de construction d'une structure et d'un matelas de repartition
PCT/FR2012/051531 WO2013004959A2 (fr) 2011-07-04 2012-07-02 Procede de construction d'une structure et d'un matelas de repartition

Publications (2)

Publication Number Publication Date
EP2729626A2 EP2729626A2 (de) 2014-05-14
EP2729626B1 true EP2729626B1 (de) 2015-04-15

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Application Number Title Priority Date Filing Date
EP12744040.2A Active EP2729626B1 (de) 2011-07-04 2012-07-02 Verfahren zur herstellung einer gründung unter verwendung einer lastverteilermatte

Country Status (3)

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EP (1) EP2729626B1 (de)
FR (1) FR2977597B1 (de)
WO (1) WO2013004959A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3019571B1 (fr) * 2014-04-07 2016-04-29 Hsols Ind Procede de construction d'un dallage non structurel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300009B (en) * 1995-10-10 1997-08-13 Eugene M A Baikoff Buoyant foundations for bad soils

Also Published As

Publication number Publication date
WO2013004959A2 (fr) 2013-01-10
FR2977597B1 (fr) 2013-08-30
WO2013004959A3 (fr) 2013-06-06
FR2977597A1 (fr) 2013-01-11
EP2729626A2 (de) 2014-05-14

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